US Bridges

FAU 8591 over Martin Branch

Fair

Marion County, Illinois · 1 MI E Central City · Structure no. 061500300000000

Built
1941
84 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
2,450
2022 count
Owner
County
County Highway Agency

About this bridge

FAU 8591 over Martin Branch is a concrete culvert carrying FAU 8591 over Martin Branch in Marion County, Illinois. It was built in 1941, so it is 84 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,450 vehicles a day, roughly 7% of them trucks, projected to reach 2,980 by 2046. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesFAU 8591
CrossesMartin Branch
Location1 MI E Central City
CountyMarion County
StateIllinois
Coordinates38.54717, -89.11522
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length27 ft (8.2 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,450 (2022)
Projected traffic2,980 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 8591 over Martin Branch built?

It was built in 1941, making it 84 years old in 2025.

What condition is FAU 8591 over Martin Branch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does FAU 8591 over Martin Branch carry?

About 2,450 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is FAU 8591 over Martin Branch?

The structure is 27 ft (8.2 m) long with a longest span of 13 ft (3.9 m).

Who owns FAU 8591 over Martin Branch?

It is owned by the County Highway Agency.